i think the bigger the number the more curved they are. so if your lenses are sliding im guessing that its TOO BIG or too looose so you would have to get something more curved.
so if u are wearing 8.6 and its looose then try to get something like..8.8??
but then it also could be that you have astigmatism. its like ur eyeballs are flat. thats why its not fitting. so u might want to get something like 8.3 or 8.2 or something.
well you should really try going to the optometrist if u dont want to keep wasting money on buying lenses that dont even fit.
ive tried many many many different lenses with many different diameters and curvatures and what nots and nothing ever bothered me so i really dont know what to tell u.
I dont have astigmatism.
And when i say, i can't go to my optometrist. it means, i cant go to my optomitrist



































